The Effects of Symbol Background Color on Visual Search in a Large Grid Display in Adults Without Disabilities
- Russo, Ashley
- [University Park, Pennsylvania] : Pennsylvania State University, 2021.
- Physical Description:
- 1 electronic document
- Additional Creators:
- Wilkinson, Krista M. and Schreyer Honors College
- Restrictions on Access:
- Restricted (PSU Only).
- Augmentative and Alternative Communication (AAC) is a way for individuals with complex communication needs to access speech and language. Aided AAC requires a tangible device for the communicator to create their messages. With these devices, researchers have since become interested in how to customize the device display in order to create the opportunity for efficient communication. Wilkinson and Jagaroo (2004) have researched four visual perceptual factors and how they play a role in device display design. Previous research has indicated that the inclusion of background color on small arrays inhibits search for a target symbol in young children (Thistle and Wilkinson, 2009; Wilkinson and Coombs, 2010; Wilkinson and Snell, 2011). Recent research by Thistle (2019) has found that the inclusion of background color within a 60 symbol grid display creates more efficient search for a symbol within an adult population. This study aims to replicate the findings of Thistle (2019) with the additional measure of eye tracking. Eighteen participants in this study completed a symbol searching task, where they were asked to select three target symbols per sentence stimuli in the order they were presented within the sentence. Participants experienced both white and color background conditions. Results indicate that there is a slight advantage for latency to fixate on a target symbol when background color is included within the display design. Future research should be interested in creating a communication exchange between a sender and receiver with the inclusion of background color on a 60 symbol grid display. Future studies should also include participants who are daily AAC users, to determine if the inclusion of background color is a valuable factor in creating efficient search for target symbols.
- Other Subject(s):
- Dissertation Note:
- B.S. Pennsylvania State University 2021.
- Technical Details:
- The full text of the dissertation is available as an Adobe Acrobat .pdf file ; Adobe Acrobat Reader required to view the file.
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